Frederick or Fred Clark may refer to:
Frederick Scotson Clark (1840–1883), English organist and composer Frederick W. Clark (1857–1916), American engineer and businessman F. Ambrose Clark (1880–1964), American equestrian heir Patrick Clark (bishop) (Frederick Patrick Clark, 1908–1954), Canadian Anglican bishop Fred Clark (1914–1968), American character actor H. Fred Clark (1937–2012), American pediatrician and vaccinologist Fred Clark (politician) (born 1959), American member of Wisconsin State Assembly Frederick Le Gros Clark (author), British children's author and an expert on malnutrition Frederick Le Gros Clark (surgeon), British surgeon
See also Frederick Clarke (disambiguation)